<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>p5_浮动布局</title>

    <style>
        .fu {
            width: 500px;
            background-color: #ff0;
            overflow: hidden;
        }

        .fu > div {
            width: 100px;
            height: 100px;
            border: 3px solid #000;
        }

        .z1 {
            background-color: #f00;
            float: left;
        }

        .z2 {
            background-color: #0f0;
            float: left;
        }

        .z3 {
            background-color: #00f;
            float: right;
        }

    </style>

</head>
<body>

<div class="fu">
    <div class="z1"></div>
    <div class="z2"></div>
    <div class="z3"></div>
</div>

</body>
</html>